package day7;

public class UsbBlueCameraTEST {
    public static void main(String[] args) {
        UsbBlueTooth b = new UsbBlueComera("佳能单反");
        b.connect();
//        Usb u=(Usb)b;
//        u.plugin();
//        u.work();
        ((UsbBlueComera) b).plugin();
        ((UsbBlueComera) b).work();
    }
}
